blast_repo fixes (dart-lang/test_process#63)

This PR contains changes created by the blast repo tool.

- `drop-lint`

pkgs/test_process/analysis_options.yaml

@@ -15,5 +15,4 @@ linter:
     - missing_whitespace_between_adjacent_strings
     - no_adjacent_strings_in_list
     - no_runtimeType_toString
-    - package_api_docs
     - unnecessary_await_in_return